Duplicating apparatus



Oct. 28, 1941. M. P. NEAL 2,260,330.

DUPLICATING APPARATUS F'iled April 7, 1939 v 17 Sheets-Sheet 1 Oct.28,1941. I M. P. NEAL I 2,260,330

DUPLICATING APPARATUS Filed April 7, 1939 17 Sheets-Sheet 2 Oct.28,1941.

M. P, NEAL DUPLICATING APPARATUS Filed April '7. 1939 I'IIl/IIII III:

l'YSheets-Sheet 3 I Jinan/or? M. P. NEAL 2,260,330

DUPLICATING APPARATUS Filed AprilY, 1939 Oct. 28; 1941.

17 Sheets-Sheet 4 Oct. 28, 1941. M. P. NEAL 2,260,330.

DUPLICATING APPARATUS Filed April 7, 1959 17 Sheets-Sheet '5 Oct,28,1941; M. F. NEAL DUPLICAT ING APPARATUS Filed Ap ril "7, 1959 17'Sheets-Sheet 6 Oct. 28, 1941. M. P. NEAL DUPLICATING APPARATUS.

17v Sheet's -Sheet 7 Filed April '7, 1939 I lllvll Get. 28, 1941.- M. P.NEAL 2,260,330

DUPLICATING APPARATUS {i (aria Oct 28, 1941. NE L 2,260,330

DUPLICATING APPARATUS Filed April .1959 17 Sheets-Sheet 9 l I I: 11:11 Q1 T.

Oct. 28, 1941. M. P. NEAL 2260;330

DUPLICATING APPARATUS Filed April 7, 1959 17 Sheets-Sheef. 10'

01-11 gys;

17 SheetLs-Sheet 11 M. P. NEAL DUPLICATING APPARATUS Filed April 7, 1939Oct 28, 1941.

Jizuemo Oct 28, 1941..

P. NEAL DUPLICA'IING APPARATUS Fild' April '7, 1959 17 Sheets-Sheet l2bu mm Oct 28, 1941. M. P. NEAL DUPLICATINQ APPARATUS Filed April- 1959l"? Sheets-.SheetiS IIIIIIIII'I 1-,,

jzaenioid' Oct. 28, 1941. M. P. NEAL DUPLICATING APP RATUS 17 Sheets- Sheet 15 Filed April 7, 1939 Oct. 28, 1941. -p NEAL DUPLICATING APPARATUS17 shets-sheet ls.

Filed April 7, 1939 Oct.'28, 1941. M. P. NEAL 'DUPLICATING APPARATUSFiled April 7, 1939 17 Sheet-Sheet 1 fiiiiiiii! lution of the drum uponrangement, I stroke of which 'atented Oct. 28, 1941 Y Morris 1. Neal,

Incorporated, Chicago,

West Virginia Villa Park, 111., assignor to man,

111., a corporation of Application April '1, 1939, Serial No. 266,518

16 Claims. (Cl.2'l1-'-22) My invention relates to duplicatingapparatusind particularly to an improved form of blackrint duplicating apparatusemploying a master sheet in the form of a thin sheet of aluminum or thelike upon which a suitable ink repellent may be spread for controllingthe effective application of ink to the sheet. My present improvementsare not however to be restricted to use in connection with this type ofmachine, so far as they are applicable to other types of machines.

My invention relates among other things to improved means for feedingcopy sheets one at a time froma pile of sheets so as to insure with ahigh degree of accuracy the delivery of a sheet upon each operativemovement of the parts and so as to prevent the delivery of more than asingle sheet at a time. For attaining these results, I have provided animproved form oi supporting means for the copy sheets together with animproved arrangement of cooperating rollers for buckling the top sheetand feeding it forwardly in timed relation.

I have worked out my improved control of the copy sheets by theprovision of a mutilated roller which is rotated in one direction uponeach revowhichthe master sheet is mounted for buckling the top sheet ofthe pile of copy sheets upwardly for drawing the forward ,.edge of saidsheet backwardly so as to pull such top sheet out of engagement with abackwardly extending finger, the mutilated roller being then rotated inthe opposite direction for causing the sheet to be straightened out ontop of the finger, after which an intermittently driven cylindricalroller in engagement with the sheet causes it to be moved forwardly, intimed relation. In the construction illustrated, the mutilated rollerserves also by its rotation in contact with the pile of copy sheets togive the pile the required downward movement against the action of aspring and to control the subsequent upward movement of the pile by thespring for bringing about the stripping action by which the top sheet isseparated from the pile.

It is another object oi my invention to provide improved means forcontrolling the operation of the machine so as to enable the operatoreasily and quickly to stop the movement the copy sheets through themechanism without stopping .the rotation of the drum and easily andquickly to reestablish the regular sequence of printing operations whendesired.- In'my improved arhave provided a hand lever by a theimpression roller and the inking mechanism are moved out of normal oparrangement of latching means for holding down a hand lever by whichsome of the. mechanisms oiv the machine are thrown out of operation,being fountain unit removed;

Fig.v 5a=is a horizontal sectional view takenof the parts omitted; K,Fig. 7 is a vertical sectional view taken sub erative engagement withthe drum, and the sheet feeding means is silenced. My novel arrangementis such that an upward intermediate buckling of the top copy sheet iseffected upon the downward stroke of the hand lever by which theeffective operation of the machine is stopped, such top sheet being heldcontinuously'in this buckled condition while the hand lever remainsdown. When the hand lever is brought again to its raised position for ofthe machine, 'the impression roller and the inking mechanism are broughtback into operative relation to the drum and the buckled top sheet iscaused to straighten out on top of the stripping finger ready to beadvanced upon the next successive actuation of the usual sheetforwarding means. i i

It is another object of, my invention to improve mechanisms of this typein sundry details hereinafter pointed out. The preferred means by whichI have accomplished my several objects are illustrated in theaccompanying drawings, in which- Fig. l is atop plan view of my improvedma:- chine but with the top face portion of the housing means brokenaway at each'side of the machine;

Fig. 2 is a central vertical sectional view of the upper portion of myimproved machine being taken substantially at the line 2-4 or Fig. 1;

Fig. 3 is a transverse vertical sectional view taken substantially atthe line H of Fig. 2;

Fig. 4 is a vertical sectionalview showing the taken substantially atthe line 4-4 of Fig. 6;

Fig; 5 is a vertical sectional view taken substantially at the line M ofFig. 2, with the ink Ila-4a oi Fig. 5, with the away for clearness oisubstantially at the line central portion broken illustration;

Flg.'6 is a horizontal sectional view taken substantially at the lineii--B of Fig. 2 with certain stantially at the line i.-1 of Fig. 5;

Fig. 8 is aview similar to Fig. '1 but position of some of the parts;

Figs. .9 and 10 are vertical sectional views taken substantially at theline 9-! and the line Ill-l0, respectively, 9! Fig. 2; p Y

renewing the operation with some of the parts omitted, and showing achanged Y turned flange flange 43 Fig. 11 is a vertical sectional viewtaken substantially at the line ll-ll of Fig. 6 and showof the parts;

Fig. 12 is. a vertical sectional view taken substantially'at the1ine'|2l2 of Fig. 1 but with some of the parts removed, such sectionline ing byfdotted lines changed positions of certain l2l2 being locatedoutside of the main gearof I the machine at the middle portion of thefigure:- I

Fig. 13 is a view similar to a portion of Fig. 12 but showing a changedposition of the parts;

Fig. 14 is a horizontal sectional view take stantially at the line l4l4of Fig. 5;

n sub- Fig. 15 is. a vertical sectional view taken substantially at theline l-l5 of Fig. 14; Fig. 16 is a vertical sectional view takensubstantially at the line I 6-i6 of Fig. 9;

Figs. 17 and 18 are views similar to Fig. 16 but showing changedpositions of the parts;

N Fig. 19 is a vertical sectional view on an enlarged scale through aportion of my improved- Fig. 21 is an end view of the drum, with certainof the parts shown in vertical cross-section as' shown at the line2l.-2i o'f Fig. 9, showing by dotted lines a changed position of thecopy sheet stripping mechanism; Fig. 22 is an inside face view of thesection of the drum upon which the master sheet is secured, the mountingarms for said portion of the'drum being shown in section and some of theoperating parts being omitted for clearness of illustration;

Figs. 23, 24 and are sectional views taken substantially at the line23-23, the line 24-24, and the line 25-25, respectively, of Fig. 22;

Fig. 26 is a view similar to Fig. 25 but showing "a changed position ofthe parts;

Fig. 27 is a vertical sectional view taken substantially at the line2'I2'| of Fig. 5;

Fig. 28 is a detailed view showing the arrangementof the means forgiving one of the inking rollers a longitudinal reciprocating movement;

- Fig; 29 is a face. view of the operating cam of the apparatus shown inFig. 28, substantially as seenat the line 29,-29 of Fig. 28;

Fig. 30 is a'view similar to a portion of Fig. 27 but showing a changedposition of the parts;

Figs. 31, 32, 33 and 34 are diagrammatic views showing successivepositions of the parts for the feed of a sheet of paper from the pile ofcopy sheets; I

Fig. 35 is a detailed view taken substantiailyat the line 35-35 of Fig.22 but with the master sheet held by the operator in changed position inthe course of adjusting it to the desired position; and Fig. 36 is adetailed view of a fragmentary portion of the drum and master sheetsubstantially .as seen at the line 3636 in Fig. 35.v

Referring now to the several iigures of the drawings, inwhichcorresponding parts are in-' dicated by the same reference characters,40. in dicates a cabinet of any approved type (see Fig.

I 11) upon which the frame of my improved ma.- --chine rests. In thearrangement shown, the

framework is in the form of a housing, comprising a sheet metal bottom42 at the front and an upturned at the rear. 1 Upon the side .edge por-Dlate 41 having an up-- tions of said bottom plate 41,11 have providedsheet metal standards or side plates 44 and '45, each provided with aflange 46 extending thereabout :in substantially right-angular relation.In spaced position with respect to the side plates 44 and 45, there areremovable panels 41 and- 46,

' also formed'ofsheetmetaL. and having flanges 49 thereabout. Thestandards or side plates are rigidly connected together by means ofaheavy crossbar 56 at the rear face of the machine (at' the left in Fig.2) by a crossbar 5i (see Figs. 2

and 6) positioned directly beneath the drum and I by a considerablenumber of operating parts as hereinafter set forth.

Between the standards 44 and 45, I have mounted a drum structure 52 bymeans of a heavy shaft. 53 which is supported between the standards bymeans of anti-friction bearing devices 54 and 55, as is clearly, shownin Fig. 9 As is clearly sho'wn in Fig. 2 and in'various other figures,the drum 52 is formed in two sections 56 wardly so as to fit between thearms or end plates 58 of the section 56.

As is clearly shown in Fig. 10, the drum52 is provided with a pluralityof cams and other mechanism at its opposite ends. At the near side ofthe machine (at the right in Fig. 10), I

have provided two cams 60 and 6| .mounted in bridging position between.the two sections 56 and 51 of the drum, said two cams being arranged inthe same plane with each other .andhaving their end portions in spacedrelation to each other at opposite sides of the drum, as is clearlyshown in Fig. 7. In the arrangement shown, the cams 66 and 6! aremounted in position by means of machine screws 62 passing through thecams and secured by means of screw-threads in lugs 63 carried by thedrum. In outwardly spaced relation to the cams 60 and 61, I haveprovided a cam 64 in the form of a ring which is adjustably mounted inpositionby means of machine screws 65. passing through circumferentialslots 66- in the cam into lugs 61 carried by the drum. In spacedrelation to the cam 64, in turn, I have provided through spacing sleeves18 into engagement a second cam 68 in the form of a ring secured to theouter face of the cam 64 by means of bolts 69. At the opposite end ofthe drum, I have provided cams 16 and II which are similar in size .andshape to the cams 60 and Si respectively, such cams being secured inposition by means of machine screws in positionupon shown, the gear 14for holding the gear 13 in spaced relation to the cams 10 and 1|, thescrews 12 being mounted at their inner ends in lugs 15 carried by the 12which secure a ring gear 15 drum. Upon the outer face of the gear 13, I

- outer face of the cam 16, I-have mounted a cam 80, also in the form ofa ring,

secured in position by machine screws 6| exten into threaded openings-inthe cam 16, spacing sleeves 62 being provided between said two cams.

The means for driving the drum52 comprises the arrangement shown anelectric motor 63 the drum. In the arrangement I is provided withspacing bosses.

aae sso -with a shaft/i which is provided with a gear 02 fixedly mountedthereon. As is clearly shown in -Fig. 11, the gear 02 meshes with arotatably mounted pinion 03 which in turn drives a pinion 94 meshingwith the gear 13 carried by the drum. The arrangement is such thatduring the time when the motor 801s in operation the shaft 00 carryingthe drum sections and the parts connected thereto isdriven'continuously.

As is perhaps best shown in Fig. 21, the drum section 50 is of greaterdiametrical size than the section 51 for reasons as will appearhereinafter. Upon the drum section 50 of greater diameter, I haveprovided means for mounting a master sheet 95 with its intermediateportion wrapped about the face of the drum section. For making secondflange H0 I00, such flange IIO however being mounted upon an auxiliaryplate IIO slidably mounted uponthe plate 00. The auxiliary plate III isprovided with a narrow plate 'IIO pivotally mounted thereoncorresponding substantially to the master sheet adjustablecircumferentially with respect to. the drum section, I have connectedthe opposite ends of the master sheet with a plate 96 which extendsacross the drum and is adjustable edgewise with respect thereto. Foradjustably mounting the plate 26 in position, I have provided brackets91 and 00 thereon having slots '90 therein which are slidable uponshafts or bars I00 and IIII carried by the drum section 56longitudinally thereof, as is best shown in Figs. 2 and 23. At about itsmiddle point, the

plate 96 is provided with an opening I02 through which 9. lug I03extends, such lug being mounted upon the inner face of the wall of saiddrum section 00. Upon the face of the plate 8 0, at the right in Fig. 2,I have provided a bracket I00 in which an adjusting screw I05 isrotatably mounted, such adjusting screw I00 having screwthreadedconnection with the lug I00 for holdin the plate 90 in adjusted positionwith respect to the drum section.

At'the lower edge of the plate in the position of the parts as shown inFig. 23, I have provided a flange I00 extending at an angle with respectto the body of the plate. Upon the face of the plate above the flangeI08, 'I have pivotally mounted a small plate I01 which is pro-' vided atits freeedge with a flange I00 in position' to cooperate with the flangeI08 for gripping one end portion of the master sheet 00. In. thearrangement shown, the plate I01 is provided with a plurality of pinsI00 extending through slots H0 in the plate 00, said pins having coiledsprings III mounted thereon in'position normally tohold the plate. I01moved to the limit of its motion in clockwise direction in said Fig. 23so as to hold the flanges I00 and I00 7 in effective gripping positionwith respect to each other. In the arrangement shown, the plate 90 isprovided with lugs H2 at right angles to its face for limitingthemovement of the master the plate I01 of the mechanism iustdescribed,such plate H0 being provided at its free edge with a flange III adaptedto cooperate with the flange H0 for gripping the end of the master sheet05. :The plate 'I I0 is provided with a plurality of pins II8 extendingthrough slots H0 in the plate 06 and the auxiliary plate III, springsI20 being provided on said pins for hold- 'ing the plate 0 and itsflange III normally in gripping relation to the flange H0. The plate IIIis also provided with stop lugs I2I corresponding to the lugs II2 of thearrangement at the opposite edge of the plate 00 for limiting themovement of the master sheet into position to be gripped. In thearrangement shown, the plate H0 is slidably mounted in position on theplate 00 by means of headed pins or rivets I22 carried by the plate Inand working-in slots I23 in the plate 90, as is clearly shown in Figs.22 and 24. The plate H0 at one edge of the plate 00 is normally urgedtoward the opposite edge of said plate 00 by means of coiled springsI20, as is best shown by Fig. 23.

In the arrangement shown in the drawings. the plate H0 is pivotallymounted in position by means of flanges I20 formed integrally with theplate at its opposite ends, said flanges being provided with large lugsI20 thereomas is best shown in Fig. 26. In the position of the parts asillustrated in Figs. 22-25, the plate H0 is held against swingingmovement on its pivotal axis by the engagement of the lugs I20 with theface of the plate 30 When it is desired that plate 00 so as to permitsaid plate to be swung in clockwise direction in said Fig. 26. 'When thelugs I20 have been carriedcompletely through the slots I20, the pull onthe handle I21 is relaxed for permitting the springs I24 to draw the Oilsheet 95 into gripping position between the flanges I08 and I00. In thearrangement shown, the plate I01 is also provided with a pivotallymounted lever or bracket IIO which stands normally in the position asshown in Fig. 23 but which is capable of being swung in counterclockwisedirection in Fig. 23 into a changed past-center position in which it iseil'ective for holding the plate I0'I swung toward the right in Fig. 23for permitting ready insertion of a master sheet between the flangesI00. and I00.

At the opposite edge of the plate 00, at the top of the plate in theposition in which the parts are shown in Fig. 23, I have provided aplate H0 to the position as shown in said Fig. 26, in whichposition thelugs I20 serve to prevent return movement of the plate IIO by thesprings I20.

In the arrangement shown in my'drawings, the master sheet 0t is in theform of a thin flexible sheet of metal, preferably aluminum, having hadits operative face subjected to a sand blasting .operationfor causing anink repellent when applied thereto to spread evenly over its surface.when a'master sheet of this type is to be mounted upon the drum,,theparts areflrst brought to the position as shown in Fig. 20, whereupononeend portion of the master sheet is inserted between the flanges H0and III into even engagement with the, stops I2I.' The plate H0 is thenmanipulated for freeing the large lugs I20 from the slots I20 of theplate 00 so as to permit the springs I20 to move the plate H0 intoposition to grip'the 'end of the master sheet as shown in Fig. 28. Afterthe end of the sheet 00' has been secured in position, theflsheet isextended substantially horizontally above the Q 3 corresponding to theflange

